Birchwood Casey Perma Blue Liquid 3oz – Cold Blue Finish Touch-Up

Birchwood Casey Perma Blue is a cold blue liquid for restoring and touching up worn or scratched blued steel finishes on firearms. Unlike hot bluing processes that require specialized equipment, this room-temperature formula lets you repair minor finish damage at home without removing the metal from the gun. Ideal for maintaining vintage firearms, repairing handling wear, or refinishing small parts.

The 3oz bottle includes an applicator and works on all steel surfaces that accept cold blue. Clean and degrease metal thoroughly before application for best results. Multiple coats produce deeper color. Not suitable for stainless steel or aluminum.

• Type: Cold blue liquid finish
• Bottle Size: 3 ounces
• Compatible Metals: Carbon steel, alloy steel (blued finishes)
• Application: Room temperature touch-up and refinishing
• Use: Restore worn blued finishes, cover scratches and handling wear